Right beside the Verla Mill, on the sheer rock face above the rapids, are some rare prehistoric paintings representing the oldest stratum of Finnish rock art, mainly of the Comb Ceramic era around 7 000 BC.
The three layers of painting may be very far apart in age, since new paintings were presumably done on top of old ones. They are painted in red on the smooth rock face and have been protected for thousands of years by the thin film of silicon dioxide forming on the surface.
Eight human figures, three animals and a pointed motif can be distinguished on an area of rock about 6 metres wide and 1˝ metres high. There are also some motifs that are so worn they can no longer be identified.
